Internal-combustion and liquid-actuated engine.



E N I G N E D E T A U ml 0 A INTERNAL COMBUSI'DJN AND APPLTC-ATKONYILED140129 1911.

Patented July 29, 1913.

z BIZEETB-SHEET 1.

G. B. DUNBAR.

INTERNAL COMBUSTION AND LIQUID AOTUATBD ENGINE.

nrmoumn 1mm Rev. 2 1911. 1 $68,634.

Patented July .29, 1913.

2 BHEETSFHEET 2,

PATENT GEORGE BAKER DUNBAB, F DETROIT, -MICHIGAN.

INTERFAL-COMB-USTION- AND LIQUIDACTUATED ENGINE.

Specification of Letters Eatent.

Patented. July 23? 13313.

Application 'filed.November 29, 19LL SeriaLNo. 663,019.

To all whom it may concern Be it known that I, GEORGE B. DUNBAR, a citizen of the United States, residing at- Detroit, in the county of \Vayne and State of Michigan, have inventedcertain new and useful Improvements in Internal-Combustion and Liquid-Actuated Engines, of which the following is a specification.

'My invention relates to improvements in internal combustion and liquid actuated engines, the primary object being to provide a combined internal combustion and liquid actuated engine, of exceedingly simple, cheap, and efficient construction.

A further object of the invention is to provide an'engine or system for developing and applying power comprising an internalcombustion engine and a liquid-pressure engins, each designed to cooperate through mechanical means to drive a single machine.

\Vith this end in view, the improved engine comprises a single working cylinder adapted to be alternately supplied with the cooperating, combustible and liquid charges.

The improved engine is particularly designed and adapted to work in conjunction .with a body of liquid having a substantial head as in a hydraulic ram or the like.

\Vith the above mentioned and other objccts in view, the invention consists in the novel construction, arrangement and combination ofparts, hereinafter described, illustrated in some of the embodiments in the accompanying drawings, and particularly pointed out in the appended claim.

Referring to the drawings forming a part ,of this specification, Figure 1, is a vertical sectional view of one form of my invention applied to a motor of the rotor or turbine, type, the liquid and valves being shown'in their position prior to the ignition of the combustible charge or working impulse of the engine. Fig. :2, a similar view'showing the position of the parts at the end of the working impulse. Fig. 3, a view of a modified form of working cylinder provided with a piston and exhaust port, the piston being shown at the end of its stroke. Fig. 4, a similar view showing the position of the parts during the ignition of the compressed combustible charge. Fig. 5, a cross sectional view taken on line 5--5 of Fig. 4. Fig. 6, a top plan view of the spider stop member mounted on the stem of the liquid inlet valve for limiting the upward or opening movements of the latter. Fig. 7, a view of the inner side of the valved liquid outlet port communicating with the liquid chamber portlon of the working cylinder. Fig. 8, a diagrammatic vie-w showing the improved working cylinder connected to a pipe or reservoir containing a column and head of liquid.

Similar numerals of reference designate like parts throughout all the figures of the drawlngs. r

The improved engine comprises wor inlg cylinder 1, provided with, a on i "ion chamber 2, and a. liquid chamber cylinder 1, is mounted ina vertical post. and is provided atone end of its top with a charge inlet port 4, communicating with the combustion chamber 2, and ads ited to be opened and closed by means of a suitable valve 5. The charge inletport 5, is adapted to receive the combustible mixture or charge through a suitable conduit pipe 6, commurii eating. with the carburieter or source of hydrocarbon supply, saidsource of supply being provided with suitable means or. mechanism (not. shown) for causing the fuel charge to flow into the combustion chamber Q, at proper times during the operation of the engine.

The compressed combustible charge is adapted to be ignited through aspark plug 7, forming a. part of any suitable and con venient system ot electromagnetic ignition and timing mechanism and upon the ignition of the combustible charge during the working impulse a large portion of the liquid or operating. fluid in the liquid chamber 3, is forced out through a liquid outlet port. 8, communicating. with the rotor or other device to be operated. The liquid out-- let port 8, is adapted to be opened and closed by means of a valve 9, said valve preferably opening against the resistance of a. spring 10, and, in the present instance, having a valve stem 9", extending through and d within an opening in spider nu the liquid outlet port. The liqui 3, is adapted to be supplied with liquid after each working impulse through a 'd inlet port 11, and as a means for c port during each working ing the same and resupply g quid chamber with a liquid charge in the act of compressing the explosive mixture in combustion chamber, a valve 12, prov said valve being adapted to he limited in its upward or opening by means of a spider stop member 13, mounted on the valve stem 12*, the latter being preferably surrounded by a spring 14, and operating in a guide opening 15, the

sirin 14, in th iresent instance bein in l g l a i:

: the provision of 1 source of supply.

terposed between the boss portion 15, forming the guide opening 15, and the spider stop 13, whereby the valve 12, in its closing movement will operate against the resistance of said spring. The liquid chamber 3, is adapted to communicate with any suitable and convenient source of liquid supply, and the working cylinder, in the presentinstance, is secured to an elbow pipe 16, secured to or communicating with a connecting pipe, such for example,-as the connecting pipe 17, and reservoir or tank 18-, containing a column and head of water as illustrated in Fig. S, of the drawings.

The liquid outlet port 8, may communicate with a suitable rotor or turbine casing 19, through the medium of suitable connecting or conduit pipes 20, as shown in Figs. 1 and 2, of the drawings, it being obvious that by a second working cylinder and its connections such as above described, and suitably connecting the same at a suitable point in the rotor casing through a sec ond conduit pipe, the rotor may be readily reversed as desired, and it is also obvious that by the provision of two of such Working cylinders the same may be readily embodied as a double acting pump for pumpmgeor raising columns of water from. a co-mmoii In the form or embodiment of my invention as shown in Figs. 1 and 2, the products of combustion or burned gases during each .working impulse are adapted to be taken up by the liquid in the liquid chamber and forced out throu h the liquid outlet port 8, the fresh gases being adapted to pass in through the inlet port 4, and to be compressed through the next liquid charge entering through the liquid'inlet port 11.

In the form or embodiment of my nvention shown in Figs. 3, 4, and 5, a piston head 21, is mounted in the working cylinder, said piston head being provided with guide members 21, adapted to reciprocate in diametrically opposite uide wa s 1*, of the working cylinder, sai piston ead 21, being provlded with piston rings 22, and carrying an electrode 23, adapted to cooperate with the spark plug 7, in formin a spark gap 23", when the fuel charge as been compressed, as illustrated in Fig. 4, whereby said fuel charge is ignited.

As a means for providing for the escape of the exhaust gases, the combustion chamher is provided with an exhaust port 24,

adapted to be opened and closed through the reciprocation of the piston head 21, as shown in Figs. 3, and 4, of the drawings.

From the foregoing description, taken in connection with the accompanyin drawings, the operation and advantages 0 my inven tion will be readily understood Having thus described some of the embodiments of mypinvention, what Iolaim and desire to secure by Letters Patent is,-

An internal combustion and liquid actuated engine, comprising a working cylinder providedat one end with a combustible charge inlet port and valve and at the other with a liquid inlet port and valve, the latter being provided with a stop and a spring for holding said valve open; a liquid outlet port and valve, a source of liquid supply comprising a connectingpipe and. reservoir above said working cylinder, andmeans for igniting the combustible charge when the liquid reaches a predetermined height in said working cylinder.

11 testimony whereof I have affixed my signature in resence of two witnesses.

GE RGE BAKER DUNBAR. Witnesses:

MABEL M. SLOCUM, CHAS. H. Smoum. 

